Description:
Did you know your assembly can be more accurate than your 3D printer? Let's deep-dive into precision designs, regardless of your printer. This is an educational video for designers to learn about borrowing features, material qualities, or geometry from common parts, ultimately enhancing their results in making reliable assemblies.

I included these elements to explain the topic:
1) Useful components to "borrow"
2) CAD demonstration for geometry
3) Material Properties discussion with application
4) 3D designs, open source models
3) Mass Produced design Examples

Online parts:
Big shiny ball, 3/4 in ► https://amzn.to/3MuwqjL
Small shiny ball, 3/8 in ► https://amzn.to/3TgkdmO
Pink nylon ball, 0.43 in ► https://amzn.to/4e8DRsC
Poly tube, 3/8 od ► https://amzn.to/3XaiTD9

CHAPTERS
0:00 about this topic
1:16 deigns in the wild
5:17 precise shaft alignment
8:39 ball bearings
12:11 runout, rotation
15:36 5 CONCEPTS for balls
19:09 borrow a SPRING
24:50 borrow TOUGHNESS
27:20 smoothness?
28:43 golf tee
30:08 what to add next?